I had a knocking noise coming from under the car that was diagnosed as the propshaft centre bearing knocking the tunnel and exhaust. It only did it when pulling away in first gear. I replaced the propshaft and all was well for a while and now it has started doing it again. Have I been unlucky and had two duff propshafts or is the centre or rear diff causing them to fail?

Your thoughts please gents.....

PS car is MY05 STI 6speed with DCCD.

 

Probably clutch judder

 

It's definetly the propshaft. Just don't know whats causing it to knock.

 

Have you replaced the rubber bushing around it?

 

Don't think you can replace the rubber bushing mate. Something else is causing it to knock and wearing the bushing

 

Can you replecate the noise withnthe car on a ramp? Could it be a bad fitting downpipe rattling against the gearbox cradle??

 

No you have to give the rear wheels some resistance to make the noise/feeling. It is without doubt the centre bearing again. I just wonder if the rear/centre diff is the cause.

Thanks for the idea though